A Silicon-based Imidazolium Ionic Liquid Iodide Source for Dye-Sensitized Solar Cells

Room temperature molten salt 1-methyl-3-(trimethylsilyl)methyl-imidazolium iodide (MSII) was used for io-dide sources in dye-sensitized solar cells with an organic sensitizer 2-cyano-3-[5-[4-[3-[4-(4-(N,N-bis(4-methoxy-phenyl)amino)phenyl)phenyl]-2,5-di-n-butyl-pyrrolo[3,4-c]pyrrole-1,4-dione]phenyl...

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Veröffentlicht in:Chinese journal of chemistry 2013-03, Vol.31 (3), p.388-392
Hauptverfasser: Wu, Wenjun, Zhang, Xiaoyu, Hu, Yue, Jin, Bin, Hua, Jianli
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Sprache:eng
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Zusammenfassung:Room temperature molten salt 1-methyl-3-(trimethylsilyl)methyl-imidazolium iodide (MSII) was used for io-dide sources in dye-sensitized solar cells with an organic sensitizer 2-cyano-3-[5-[4-[3-[4-(4-(N,N-bis(4-methoxy-phenyl)amino)phenyl)phenyl]-2,5-di-n-butyl-pyrrolo[3,4-c]pyrrole-1,4-dione]phenyl] furan-2-yl] acrylic acid (DPP-I) as light harvester. With an optimized electrolyte (MSII : I2 : BI : GuNCS=24 : 2 : 2 : 0.4, BI and GuCNS are short for benzimidazole and guanidine thiocyanate, respectively), photovoltaic parameters (Jsc, Voc, and ff) of device are 8.97 mA·cm^-2, 600 mV and 0.61, respectively, yielding a maximum overall photo-to-energy con-version efficiency (17) of 3.23%. And then the charge-transfer mechanism of devices was deeply analyzed with elec- trochemical impedance spectroscopy (EIS) in the dark.
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201201059